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Expired European patentEurope

MOS thin-film transistors with a drain offset region

EP 0670604 B1 · Applicant: XEROX CORPORATION

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Overview

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed February 21, 1995 and granted August 2, 2000. A European patent lasts at most 20 years from filing, so its term ended February 21, 2015.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by August 21, 2020.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledFebruary 21, 1995
PublishedSeptember 6, 1995
GrantedAugust 2, 2000
Term endedFebruary 21, 2015
Application numberEP 95301100
Classification (CPC)H10D30/674 +2 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedFeb 21, 1995PublishedSep 6, 1995Patent grantedAug 2, 2000Term endedFeb 21, 2015

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